Closing cap for a container

ABSTRACT

Closure cap ( 1 ), produced by a plastics injection molding process, for a container ( 5 ) such as a bottle, has a closure lower part ( 2 ) and a closure cover ( 3 ) joined integrally to it by way of a hinged joint. The cover ( 3 ) pivots by a hinge ( 8 ) and latches in place in an open state to a closure lower part back wall ( 12 ). A latching projection ( 26 ) also is formed on this wall. A latching edge ( 27 ) on the closure cover ( 3 ), which latching edge, in the latching state, is overrun by the latching edge ( 27 ), is positioned to engage beneath the latching projection ( 26 ). An extension of the latching projection ( 26 ) intersects a vertical (V-V) through the hinge axis. The latching projection ( 26 ) is formed so as to yield during an overrunning in the pivoting direction.

The invention relates to a closure cap, produced by the plasticsinjection molding process, for a container such as a bottle, having aclosure lower part and a closure cover joined integrally to it by way ofa hinged joint, the closure cover being pivotable by means of a hingeand being latched in place in the open state to a closure lower partback wall, a latching projection also being formed on this wall, and alatching edge on the closure cover, which latching edge, in the latchingstate, overrun by the latching edge, is positioned such that it engagesbeneath the latching projection.

A closure cap of this type is known on commercially available containersfor dispensing viscous food substances, such as honey. The latchedretaining of the closure cover in the open state not only allowsvisually perfect monitoring of the emerging stream of substance withrespect to a target destination at a lower level but also at the sametime prevents this stream from passing onto the closure cover. Thiskeeps dispensers of this type “clean”. A lateral latching edge of theclosure cover is used as latching retaining means, which latching edgeinteracts with a latching projection on the back wall of the closurelower part. The latching projection is a nipple or strip which extendsaxially parallel to the hinge and can be overrun by the latching edge ofthe closure cover, which can ultimately engage beneath it. The obstaclepresented is overcome in this way by moderate displacement of thelatch-forming elements and also under a certain shearing action. Theclosure cap, at least on the hinge side, moves into a niche in theclosure lower part back wall, with the latching projection also locatedin the niche space, on side flanks. The hinge axis of the hinge, whichis realized as a film hinge, is located on the top side of anindentation in the closure cap which is located on the end side andaccommodates the closure cover in a form-fitting manner in the closedstate. The hinge is offset with respect thereto, set back from thegeneral peripheral boundary line of the closure. This interferes withthe exterior of a dispenser of this type, which is formed as a tabletopdevice.

Stamped formations which secure the open position of the closure coverin a latching manner are also disclosed in the literature referencescited below.

For example, DE-U 76 31 199 discloses a closure cap in which a latchingprojection and a free latching edge of closure cover and closure lowerpart interact so as to move beyond a dead center position. The closurecover is in this case retained in the open state. The open position islocated at 180°.

From GB 2 076 378 A, a closure cap is disclosed in which a latchingprojection, close to the hinge, of the closure cover rollingly passesover a cam of the closure lower part. It is in this case held open moreby means of a frictional lock. The open position of the closure cover isonly slight, at less than 90°. The opening of a dispensing nipple isdirected outward, located approximately in the angle bisector.

Finally, DE 100 26 099 A1 shows a closure cap in which a latchingprojection of the closure lower part and a latching edge, which islikewise realized as a free latching projection, of the closure coverretain the latter in the open state. In this case, both latchingelements protrude perpendicularly with respect to the horizontallyoriented component which in each case includes them.

It is an object of the invention to further develop a closure cap of thegeneric type in a structurally simple and operationally reliable way.

This object is achieved first and foremost with a closure cap having thefeatures of claim 1 in which it is provided that a—possiblyimaginary—extension of the latching projection, in the direction inwhich it protrudes, as seen in cross section, intersects a verticalthrough the hinge axis below the hinge axis, and that the latchingprojection is formed so as to yield during the overrunning in thepivoting direction of the closure cover.

As a result of a configuration of this type, a closure cap of thegeneric type having an increased usefulness is achieved. The overrunningon the part of the latching retaining elements takes place in a waywhich is gentle on these elements. No shearing action occurs. All thisis of benefit to the service life of a corresponding dispenser. Thegeometry employed allows the closure cover to move back a long way andto partially dip away as it enters the end stage. Moreover, if desired,the latching even permits positioning very close to the axis. Thelatching projection, which projects into the orbiting path portion ofthe latching edge, is subjected to load in the free end region, i.e. ina zone in which the highest resilience is present. During theoverrunning in the pivoting direction of the closure cover, first of allthe latching projection yields. When the overrunning has ended, thelatching edge is in a position engaging beneath the latching projection.If the latching is to be eliminated, this once again takes place counterto the resistance of the latching projection, with yielding pivoting inthe opposite direction. The corresponding reversal is spatiallycompensated for by a free space between the back of the closure cover,which is close to the axis and moves into a retained position, and theniche which receives it there.

The subjects of the further claims are explained below with reference tothe subject matter of claim 1, but may also be of importance in theirindependent formulation. For example, it is further provided that thelatching edge is formed close to the pivot axis. This means the hingeaxis. The orbiting path portion is correspondingly short. Furthermore,the invention proposes that the boundary edge, associated with thelatching projection, of the closure cover is cut open in the axialdirection of the hinge to form the latching edge. In this case, inpractice the starting point can be a shell-like closure cover, whereofthe region close to the axis simply acquires a local notch. Thepolydirectionality which is in any case present at the wall of theclosure cover imparts a high internal stability to the latching edgedespite a possibly small wall thickness. By contrast, the latchingprojection, which is in the form of a integrally molded part, of theclosure lower part is formed as a resilient tongue as has already beenindicated above. The latching projection is advantageously rooted in theaxial region of the hinge. This results in welcome localisation of thelatching on a functional region which is in any case standard, namelythe hinge. Furthermore, it is provided that the hinge axis is disposedin the plane region of a closure top of the closure lower part. It istherefore flush with the base, which catches beneath the closure cover,of the indentation which receives the closure cover in, as it were, apositively locking manner and laterally continues into plateaus whichrun level with the top side of the closure cover. Accordingly, thelatching projection may be formed in such a way that its surfacecomplements the hinge region. Although just one latching projection inthe axial region of the hinge is sufficient, by way of example in thecase of relatively large containers, it is also possible for thelatching projection, located axially in front of the hinge, to be formedin a pair. In part for technical reasons but mainly for visualappearance, the latching edge is visible in a side view of the closedclosure cap. It will quickly become clear to the user that incombination with the latching projection which protrudes slightlydownward, there is a functional region which will induce him to try itout, namely that of the retaining securing. The situation is differentwhen the device is seen in plan view. The latching edge, when the closedclosure cap is seen in plan view, is integrated in a peripheral boundaryline of the closure. This means that on inspection in the usual way, amore continuous nature will be to the fore. Furthermore, the inventionproposes that the latching projection is formed centrally between twohinges. This strengthens the entire jointed zone. The coaxially disposedhinges enclose the region which carries the latching projection like awindow. This proves to have a stabilizing effect with respect to thelatching mechanics. Furthermore, it is advantageous for the latchingprojection to have a rounded edge contour. This may be a line in theform of an arc of a circle, comprising approximately a semicircle or atleast a segment. In this case, it is provided that the latchingprojection narrows in terms of cross section toward the free boundaryedge region. This results in the formation of a clearly perceptibleclicking noise which makes it possible to acoustically recognize orindicates that the open position has been reached. The wedge-shapedformation in combination with the rounding permits the formation of alatching element which has a whip-like action. This leads to a suddenblocking release at the zenith of the rounded edge contour. In thiscase, the closure lower part in practice acts as a reverberation body.

The subject matter of the invention is explained in more detail below onthe basis of an exemplary embodiment illustrated in the drawings, inwhich:

FIG. 1 shows, in front view, the closure cap, produced by the plasticsinjection molding process, which the closure cover closed, together withassociated container, in approximately its natural size,

FIG. 2 shows a corresponding side view,

FIG. 3 shows a plan view of FIG. 1,

FIG. 4 shows the closure cap in isolated perspective illustration, inthe demolding position or unlatched open position of the closure cover,which is realized as a snap lid,

FIG. 5 shows the section on line V-V in FIG. 1, but without illustratingthe container,

FIG. 6 shows a vertical section through the hinge region of the closurecap in the state according to FIG. 4, further enlarged,

FIG. 7 shows a vertical section corresponding to FIG. 6, embodying thelatching which has occurred between closure lower part and the closurecover which is molded integrally on it in a pivoting manner,

FIG. 8 shows in, isolated perspective illustration, the closure cap, inthe demolding position or unlatched open position of the closure cover,realized as a pivoting cover, representing a variant,

FIG. 9 shows a corresponding side view,

FIG. 10 shows the plan view onto FIG. 9, but turned through 180°,

FIG. 11 shows a vertical section on line XI-XI in FIG. 10 passingthrough the hinge region of the closure cap, in the state according toFIG. 8, further enlarged,

FIG. 12 shows a sectional illustration corresponding to FIG. 11, butshowing the latched pivoted-back position of the closure cover (cf. FIG.13), and

FIG. 13 shows the rear view of the closure cap, representing the stateaccording to FIG. 12.

The closure cap 1 illustrated in the drawing is produced as a singlepiece using the plastics injection molding process. It consists, forexample, of PP. The demolding position is shown in FIGS. 4 and 6.

Components of the closure cap 1 include a closure lower part 2 and aclosure cover 3 which is pivotably molded onto it, as well as means of alatching mechanism 4, which has a snap-action.

The closure lower part 2 also includes means for securing it to acontainer 5. The container 5 is a bottle. The contents of this bottlecan be dispensed via a stopper-controlled passage-opening 6 in theclosure cap 1. This dispensing takes place with the container turnedupside down, if appropriate together with the container 5 being squeezedso as to displace its contents. The container at least in part has wallparts of collapsible strength.

A stopper 7 is located on the inner side of the closure cover 3,specifically in an identical pivoting position. The stopper 7 is ahollow stopper. The operational pivoting is defined by a hinge 8,constituting a pivot axis for the closure cover 3. The geometric hingeaxis is denoted by x-x and is horizontal.

The hinge 8, configured as a film hinge, represents the connectingbridge between the parts 2 and 3 which are injection-molded to oneanother. The desired jointed nature is based on a linear reduction inthe material thickness in the hinge region. During closing, the closurecover 3 moves into a horizontal indentation 9 of matching contour. Thisindentation is located on the head part of the closure lower part 2. Oneither side of the horizontal, the head part merges into a plateau 10.

Indentation 8 and plateaus 9 in cross-sectional terms impart to theclosure lower part 2, a substantially elongate configuration, withslightly curved wide sides, namely a front wall 11 remote from the hingeand a back wall 12 close to the hinge. The two end walls 13 may likewisebe slightly convexly curved or, as illustrated, may be flat when seen incross section.

The common peripheral boundary line of the closure cap 1, formed by theperiphery of the plateaus 10 and the open ends of the indentation 9, isdenoted by 14. Reference is made in this context to FIG. 3.

The horizontal cross-sectional form of the container 5, as shown in thedrawings, is substantially matched to the cross-sectional configurationof the closure cap 1 which has been described.

In the closed position, the top side of the closure cover 3 ends flushwith the top side of the two plateaus 10, partly with a view toachieving a bottle which can be stood on its head.

The closure cover 3 is of shell-like configuration. It has a peripherywhich drops more or less steeply or in rounded form. The correspondingboundary edge carries as a whole the reference numeral 15.

The closable passage-opening 6 is realized at a raised, short connectionstub 16 in the base of the indentation 9. This connection piece projectsfreely into the region of the indentation 9. For sealing purposes, thestopper 7 has an annular collar 17 on the lateral wall side, whichinteracts with a corresponding annular groove 18 in the pot-shapedconnection piece 16. This formation simultaneously functions as a coverclosure latch.

The closure lower part 2 is also formed for anchoring with a view tobeing connected to the container 5. Reference is made to FIG. 5, fromwhich it can be seen that a holding means 20 starts from the inner sideof the underside of a top 19 of the closure cap 1. The holding means 20is configured in the form of a ring 21 in a, as it were, “floating”position in the interior of the cap. The band of this ring is able toyield radially. As a result of elastic restoring, making use of acorresponding length reserve of the ring band, the ring 21 snaps under ahorizontal flank of a projection, which is nose-shaped in cross section,on the neck of the container 5 (these details are not shown). The ring21 is also secured by way of vertical arms 22, which likewise start fromthe underside of the horizontal top 19 of the closure lower part 2.Further details of this docking means can be found in DE 198 24 714 A1.The disclosure content of this application is hereby incorporated in itsentirety, partly with a view to incorporating features of thesedocuments in the claims of the present application.

The end edge of the lateral wall of the closure lower part 2, which isfundamentally not round, can be utilized with a view to rotationalsecuring of the closure cap 1 with respect to the container 5. Thelatter constitutes the correspondingly inserted, rotationally securingcounterpart. Furthermore, a centering projection 23 leads from the innerside of the top 19. The edge of this centering projection 23 is rounded.This leads to progressive, position-correcting entry of this centeringprojection 23 into the corresponding neck opening of the container 5.

All that is required to open up the passage-opening is for the closurecover 3 to be deliberately pivoted up. This leads to the closure forcebetween annual collar 17 and annular groove 18 being overcome. Tofacilitate handling, the boundary edge 15, located at a distance fromthe hinge 8, of the shell-like closure cover 3 stands free such that itis possible to engage beneath it. This is achieved by a recessed grip24, realized in this region, in the wall of the closure lower part 2.The recessed grip 24 is located in the front wall 11 and extends as ahollow into the base of the indentation 9. The lower, slightly exposedzone of the boundary edge 15 is denoted by 25.

The closure cover 3 can be moved into the out-of-the way positionapparent from FIG. 7. This goes well beyond 180° and in the exemplaryembodiment includes an angle of approx. 120°. It may even extend into aposition completely concealed at the closure lower part 2.

In the fully opened state, the closure cover 3 is retained in position,in a manner which can be overcome, by the latching mechanism 4. Thecorresponding retaining results to the region of the closure lower partback wall 12.

The core piece of the corresponding latching mechanism 4 is a latchingprojection 26 formed on the wall, more specifically the closure lowerpart back wall 12. This latching projection 26 is realized as aresilient tongue and in terms of thickness is correspondingly matched tothe surrounding wall material.

As can be gathered from the drawing, the latching projection 26 isrooted in the axial region of the hinge 8, which constitutes the pivotaxis, between closure lower part 2 and closure cover 3.

The hinge axis x-x extends in the plane region of the top 19 of theclosure lower part 2. Specifically, the horizontal base of theindentation 9 is flush with the hinge axis x-x. The hinge-formingmaterial narrows in the direction of the said hinge axis x-x. Itdecreases in a wedge formation to a fraction of the thickness of therespective wall.

Taking account of the substantially vertically descending lateral wallof the closure lower part 2, the closure projection 26, which projectsoutward and downward in a sloping manner, includes an angle α ofapproximately 45° with respect to this lateral wall.

The mating latching means which interacts with the latching projection26 is a latching edge 27 on the closure cover 3. The latching edge 27extends in the vicinity of the pivot axis, i.e. the hinge axis x-x. Itsdirect spacing (cf. FIG. 6) is significantly shorter than the directspacing between the free end of the latching projection 26 and thereference point mentioned above.

In this respect, the latching edge 27, in the given pivoting range,moves along an orbiting path portion 28 which lies spatially within thecross section of the latching projection 26. The overcomablelatchability is obtained from this. The orbiting path portion 28 has itscenter point in the hinge axis x-x.

Since the latching edge 27 is formed close to the pivot axis, thelatching mechanism 4 is extremely compact.

To form the said latching edge 27, the closure cover 3 is cut open inthe axial direction of the hinge 8 at its hinge-side latching edge 15,specifically in such a manner that gaps which are deepened with respectto the end of the boundary edge 15 are formed, and when actuated thesegaps move over the latching projection 26. The gaps can be seenparticularly clearly from FIG. 4.

Corresponding to the number of these latching gaps or latching edges 27,two latching projections 26 are also formed. The said latchingprojections 26 are shaped in such a way that their surface complementsthe hinge region so that they can move autonomously. Accordingly, thelatching projection 26, located axially in front of the hinge 8, isprovided in a pair.

In a modification, the hinge 8 could in practice, divided in two, alsobe located on the outer side between a central latching projection 26,specifically, of course with a corresponding modification to the matinglatching means, on the closure cover 3.

In one way or another, as the closure cover 3 moves back into theintended latched concealed position, the latching projection 26 isoverrun by the latching edge 27 until, as illustrated in FIG. 7, thelatching edge 27 engages beneath the latching projection 26. During thisoperation, the latching projection 26 yields in the pivoting directionof the closure cover 3 until the obstacle which it presents iscompletely overcome. The geometry described is also characterized inthat a—possibly imaginary—extension of the latching projection 26, inthe direction of protrusion z, as seen in the cross-sectionalillustration of FIG. 7, intersects a vertical V-V passing through thehinge axis x-x, below the hinge axis x-x, the latching projection 26, ashas been mentioned, being overrun in a yielding manner during theoverrunning in the pivoting direction y of the closure cover 3.

The latching projection 26 operates in a relatively gentle, resilientmanner avoiding shear forces. On the other hand, mechanical loads, suchas for example ramming forces, on account of the restoring force of theresilient tongue on the closure cover 3, are compensated for by thefilm-like integral hinge, a further source of the resilience. Thedirection-changing snap-action forces are moderate, so as to be gentleon the material; the material bridge between the closure lower part 2and the closure cover 3 in practice does not tear.

The, as it were, prismatic resilient tongue, in conjunction with theend-side resilient movability, at the same time also has a switchingfunction in that the latching edge 27 first of all comes into contactwith the outer wide surface, overcomes the right-angled end region ofthe latching projection 26 and ultimately comes to bear flat against theundercut wide surface of the latching projection 26 (cf. FIG. 7). Duringthis pivoting back into the latching position described, there isotherwise sufficient clearance between the back 29 of the closure cover23 and a niche 30 provided on the closure lower part 2, since, as can beseen, a free space 31 which allows corresponding room for maneuver isleft clear between these two parts. The free space 31 lies in the planeof pivoting of the closure cover 3.

The latching is eliminated by overrunning the resilient tongue, i.e. thelatching projection 26, in the opposite direction to arrow y.

During both operations, the resilient tongue is not excessively loadedat its root, but rather is utilized in the free end region in accordancewith its highest resilience.

With regard to the latching edge 27, it also remains to state that, whenthe closed closure cap 1 is seen in side view, this latching edge 27 canbe recognized as a small gap, whereas when the closed closure cap 1 isseen from above, it is integrated in the peripheral boundary line 14 ofthe closure.

The subject matter shown in FIG. 8 ff. is of fundamentally the samestructure. The reference symbols are applied accordingly to this closurecap 1, in some cases without the associated text being repeated.

The focal point of this development relates to the latching mechanism 4.If, according to the basic version, cf. for example FIG. 3, two latchingprojections 26 with associated latching edges 27 are formed on theclosure cover 3, with the hinge 8 on the hinge axis x-x between them;then, according to this variant, the latching projection 26 is formedcentrally between two hinges 8′. The above mentioned means of thelatching mechanism 4 are located in the region of a window 32 at thehinge location. This window is formed partly on the closure lower part2, more specifically the top 19 thereof, and partly on the adjoiningregion of the closure cover 3. Here, the window 32 is drawn into theboundary edge 14, so that the latter presents the latching edge 27explained above.

As can be seen from FIG. 13, the latching projection 26 which startsfrom the top 19 and in this case too runs in the direction of protrusionz, has a rounded edge contour 33. There is a tongue-shaped, highlyresilient, stiff tab. The rounded edge contour 33 may be a circularrounding. A segment-shaped contour is illustrated.

Moreover, the resilience of the latching projection 26 is also boostedby the fact that the latching projection 26 narrows in terms of crosssection toward its free boundary region, i.e. the rounded edge contour.A wedge-shaped cross-sectional contour with a truncated tip can berecognized, forming the latching projection 26 which can be overrun bythe latching edge 27 of the closure cover 3. This produces theaction/constellation described in detail above.

On the outer side, closer to the zenith of the rounded edge contour 33,is a bevel-like flattened section 34. At a spacing from this, that sideof the latching projection 26 which carries the flattened section 34,closer to the hinges 8′,8′, has a protuberance 35. This is positioned atthe top side of a slight recess 36 which boosts the movability of thewedge-shaped portion of the latching projection 26 but offers a stableanchoring base in the region of the protuberance 35 by virtue of theincreased accumulation of material. The window 32 which has beendescribed is located above this.

According to the variant, the closure cover 3 also has a stopper 7,likewise produced in a pot shape. A diaphragm valve is associated withthe passage-opening 6 in the top 19 of the closure lower part 2. Thediaphragm carries the reference numeral 37. It is held around the edgeby an annular holding part 38. The holding part 38 is latch-connected toa receiving part 39 positioned upstream of the passage-opening 6 in thedispensing direction.

The diaphragm 37 is realized as a turning-inside-out diaphragm and has aslit 40 for the substance that is to be discharged to pass through.Further details of the said diaphragm can be found in German PatentApplication 103 33 638.9. The disclosure content of this priorapplication is incorporated in full in the present application, partlywith a view to incorporating features of these documents in claims ofthe present application.

On the container side, a plate part 41 molded integrally onto theholding part 38 engages below the diaphragm 37 in a supporting manner.This plate part 41 is attached by way of spring arms 42. The areasurrounding the spring arms 42 represents a flow connection to thepassage-opening 6, denoted as aperture 43. The clear dimension of thelatter is expediently matched to the external diameter of the pot-shapedstopper 7. In a refinement, the latching connection 17/18 can berealized or simply a clamping connection can be produced between thelateral wall of the stopper 7 and the corresponding inner wall of theaperture 43 of the holding part 38. The friction action between the twoparts can be established in such a way that it is possible to bringabout an operationally reliable closed position, producing africtionally locking securing seat, which can be deliberately overcome,between closure cover 3 and the holding part 38 retained in thereceiving part 39.

The lateral wall of the stopper 7 has longitudinal ribs 44 which in theclosed position of the closure cover 3 come into contact with the topside of the holding part 38. They act as retention means.

In the region of the retaining mechanism 4, a strip 45 which extends asfar as the top side of the cover 19 then leads from the top of theclosure cover 3. This strip 45 is at a spacing from the latching edge 27and also at a distance from the longitudinal sides of the shell-shapedclosure cover 3. The strip 45 functions as a screen and also allows anyresidual liquid which collects in the head region of the dispenser toescape via the window 32. Drying can also take place by this means.

All features disclosed are (inherently) pertinent to the invention. Thedisclosure content of the associated/appended priority documents (copyof the prior application) is hereby incorporated in its entirety in thedisclosure of the application, partly with a view to incorporatingfeatures of these documents in claims of the present application.

1-13. (canceled)
 14. Closure cap (1), suitable for production by aplastics injection molding process, for a container (5) including abottle, the closure cap comprising a closure lower part (2) and aclosure cover (3) which are joined integrally by a joint having a hinge,the closure cover (3) being pivotable by the hinge (8) and being latchedin place in an open state to a back wall (12) of the closure lower part(2); wherein the closure cap further comprises a latching projection(26) formed on the back wall, and a latching edge (27) located on theclosure cover (3); wherein the latching protection (26), in a latchingstate, is overrun by the latching edge (27), and the latching edge (27)is positioned such that it engages beneath the latching projection (26);wherein an extension of the latching projection (26), in the directionof its protrusion (z), as seen in cross section, intersects a vertical(V-V) through the hinge axis (x-x) below the hinge axis (x-x); andwherein the latching projection (26) is formed so as to yield during theoverrunning in the pivoting direction (arrow y) of the latching edge(27) of the closure cover (3).
 15. Closure cap according to claim 14,wherein the latching edge (27) is formed closed to the pivot axis. 16.Closure cap according to claim 14, wherein the boundary edge (15),associated with the latching projection (26) of the closure cover (3),is cut open in the axial direction of the hinge (8) to form the latchingedge (27).
 17. Closure cap according to claim 16, wherein the latchingprojection (26) is formed as a resilient tongue.
 18. Closure capaccording to claim 16, wherein the latching projection (26) is rooted inthe axial region of the hinge (8).
 19. Closure cap according to claim14, wherein the hinge axis (x-x) is disposed in the plane region of aclosure top (19) of the closure lower part (2).
 20. Closure capaccording to claim 14, wherein a formation of the latching projection(26) enables its surface to complement the hinge region.
 21. Closure capaccording to claim 16, wherein the latching projection (26), locatedaxially in front of the hinge (8), is provided in a pair.
 22. Closurecap according to claim 14, wherein the latching edge (27) is visible ina side view of the closed closure cap (1).
 23. Closure cap according toclaim 14, wherein the latching edge (27), when the closed closure cap(1) is seen in plan view, is integrated in a peripheral boundary line(14) of the closure cap.
 24. Closure cap according to claim 16, whereinthe latching projection (26) is formed centrally between two hinges (8,8′).
 25. Closure cap according to claim 14, wherein the latchingprojection (26) has a rounded edge contour (33).
 26. Closure capaccording to claim 14, wherein the latching projection (26) narrows interms of cross section toward its free edge region.